Electrical condenser



' 7 March 23 ,1926.

- 1,577,748 D. R. LOVEJOY ELECTRICAL CONDENSER Filed August 14 I 19g Mmzssss r 7. 4 u 7 INVE'N'TOR I BY l Patented Mar. 23, 1926.

UNITED STATES PATENT OFFICE.

. DIMMITT ROSS LOVEJ'OY, 01' NEW YORK, N. Y., ASSIGNOR TO LOVEJ'OY DEVELOPMENT CORPORATION, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

ELECTRICAL CONDENSER.

Application filed August 14, 1924. Serial No. 782,022.

To all whom it may concern:

Be it known thatI, DIMMITT Ross Lovn- I'OY, a citizen of the United States, and a.

resident of the city, county, and .State of 'v New York, have invented certain new and useful Improvements in Electrical Condensers, of which the following is a specification.

This invention relates to electrical con-.

densers, and has for its object the production. of such a condenser in a compact, du-

rable form with a maximum of capacity and a minimum of loss. 'The invention comprises a tubular condenser having a y 16 cylindrical core and an enveloping tube, the core and tube constituting the electrodes andbeing held apart at the required distance by means of insulating collars mounted on the core and rigidly supporting the 0 tube in fixed relation to the core.

' An embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a sideview of the improved condenser.

Figure 2 is a artial section of the same on line 22 of igure 1.

Figure 3 is a transverse section of the same on line 3-3 of Figure 1. I

A central core 1 is, under projections 2, screw-threaded to receive nuts .3. Upon the projections 2 are mounted insulating collars 4 of porcelain or other suitable insulating material. A metallic tube 5 is held by these collars in fixed relation to the central core 1 so that a film of air ofuniform thickness intervenes between electrodes 1 and 5. The preferred method of mounting the tube on the insulating collars 4 is by having the inner walls of the collars made beveled so that the tube 5 is automatically centered coaxial with the core 1 when the nuts 3 clamp the beveled surface of the collars against the ends of the tube. The

- of the core;

length of the outer tube must be suflicient to insure that the collars clamp the edges of the tube on their beveled surfaces before the ends ofthe collars reach the end faces Terminals 6 are shown as convenient means of making connections. With condensers made according to this plan, it is feasible: to have a film of air as thin as .002 inch so that it will be readily seen that such a condenser will present a y 55,

maximum of capacity and, on account of having air for the di-electric, will, of

course, have minimum loss. The construction is such that the space between the electrodes is substantially moisture and dust tight, and furthermore is free from any possibility of contamination by handling.

I do not, however, wish'to preclude the use of solid or liquid di-electric as many of the features of the invention would not necessarily be dependent upon the. use of air as the di-electric. The beveled inner faces and shouldered outer surfaces of the insulating collars can be so proportioned as v 2. In a fixed condenser, the combination of an inner cylindrical core forming one electrode, an outer tube surrounding the core forming the other electrode, and insulating collars having central orifices for centralizing them on the core and conical shoulders for holding the tubularelectrodes rigidly concentric with the core.

DIMMITT ROSS LOVEJOY. 

